#!/bin/bash

# GPLv3 or later. see COPYING.GPL

if [[ -z $1 ]]; then
echo "usage: 1dN" 
exit;
fi

rand=$(od -N 4 -t uL -An /dev/urandom | tr -d " ")
let MOD=`echo $1 | sed -e 's/1d//'`
# echo "MOD:" $MOD
let OUT=($rand%$MOD)+1
echo $OUT
